<template>
    <div class="login-container">
        <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form" autocomplete="on" label-position="left">

            <div class="title-container">
                <h3 class="title">
                    {{ $t('login.title') }}
                </h3>
                <lang-select class="set-language" />
            </div>

            <el-form-item prop="username">
                <span class="svg-container">
                    <svg-icon icon-class="user" />
                </span>
                <el-input
                    ref="username"
                    v-model="loginForm.username"
                    :placeholder="$t('login.username')"
                    name="username"
                    type="text"
                    tabindex="1"
                    autocomplete="on"
                />
            </el-form-item>

            <el-tooltip v-model="capsTooltip" content="Caps lock is On" placement="right" manual>
                <el-form-item prop="password">
                    <span class="svg-container">
                        <svg-icon icon-class="password" />
                    </span>
                    <el-input
                        :key="passwordType"
                        ref="password"
                        v-model="loginForm.password"
                        :type="passwordType"
                        :placeholder="$t('login.password')"
                        name="password"
                        tabindex="2"
                        autocomplete="on"
                        @keyup.native="checkCapslock"
                        @blur="capsTooltip = false"
                        @keyup.enter.native="handleLogin"
                    />
                    <span class="show-pwd" @click="showPwd">
                        <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
                    </span>
                </el-form-item>
            </el-tooltip>

            <el-button :loading="loading" type="primary" style="width:100%;margin-bottom:30px;" @click.native.prevent="handleLogin">
                {{ $t('login.logIn') }}
            </el-button>

            <div style="position:relative">
                <div class="tips">
                    <span>{{ $t('login.username') }} : admin</span>
                    <span>{{ $t('login.password') }} : {{ $t('login.any') }}</span>
                </div>
                <div class="tips">
                    <span style="margin-right:18px;">
                        {{ $t('login.username') }} : editor
                    </span>
                    <span>{{ $t('login.password') }} : {{ $t('login.any') }}</span>
                </div>

                <el-button class="thirdparty-button" type="primary" @click="showDialog=true">
                    {{ $t('login.thirdparty') }}
                </el-button>
            </div>
        </el-form>

        <el-dialog :title="$t('login.thirdparty')" :visible.sync="showDialog">
            {{ $t('login.thirdpartyTips') }}
            <br>
            <br>
            <br>
            <social-sign />
        </el-dialog>
    </div>
</template>

<script>
import { validUsername } from '@/utils/validate'
import LangSelect from '@/components/LangSelect'
import SocialSign from './components/SocialSignin'

export default {
    name: 'Login',
    components: { LangSelect, SocialSign },
    data() {
        const validateUsername = ( rule, value, callback ) => {
            if ( !validUsername( value ) ) {
                callback( new Error( 'Please enter the correct user name' ) )
            } else {
                callback()
            }
        }
        const validatePassword = ( rule, value, callback ) => {
            if ( value.length < 6 ) {
                callback( new Error( 'The password can not be less than 6 digits' ) )
            } else {
                callback()
            }
        }
        return {
            loginForm: {
                username: 'admin',
                password: '111111'
            },
            loginRules: {
                username: [ { required: true, trigger: 'blur', validator: validateUsername } ],
                password: [ { required: true, trigger: 'blur', validator: validatePassword } ]
            },
            passwordType: 'password',
            capsTooltip: false,
            loading: false,
            showDialog: false,
            redirect: undefined,
            otherQuery: {}
        }
    },
    watch: {
        $route: {
            handler: function( route ) {
                const query = route.query
                if ( query ) {
                    this.redirect = query.redirect
                    this.otherQuery = this.getOtherQuery( query )
                }
            },
            immediate: true
        }
    },
    created() {
    // window.addEventListener('storage', this.afterQRScan)
    },
    mounted() {
        if ( this.loginForm.username === '' ) {
            this.$refs.username.focus()
        } else if ( this.loginForm.password === '' ) {
            this.$refs.password.focus()
        }
    },
    destroyed() {
    // window.removeEventListener('storage', this.afterQRScan)
    },
    methods: {
        checkCapslock( e ) {
            const { key } = e
            this.capsTooltip = key && key.length === 1 && ( key >= 'A' && key <= 'Z' )
        },
        showPwd() {
            if ( this.passwordType === 'password' ) {
                this.passwordType = ''
            } else {
                this.passwordType = 'password'
            }
            this.$nextTick( () => {
                this.$refs.password.focus()
            } )
        },
        handleLogin() {
            this.$refs.loginForm.validate( valid => {
                if ( valid ) {
                    this.loading = true
                    this.$store.dispatch( 'user/login', this.loginForm )
                        .then( () => {
                            this.$router.push( { path: this.redirect || '/', query: this.otherQuery } )
                            this.loading = false
                        } )
                        .catch( () => {
                            this.loading = false
                        } )
                } else {
                    console.log( 'error submit!!' )
                    return false
                }
            } )
        },
        getOtherQuery( query ) {
            return Object.keys( query )
                .reduce( ( acc, cur ) => {
                    if ( cur !== 'redirect' ) {
                        acc[ cur ] = query[ cur ]
                    }
                    return acc
                }, {} )
        }
    // afterQRScan() {
    //   if (e.key === 'x-admin-oauth-code') {
    //     const code = getQueryObject(e.newValue)
    //     const codeMap = {
    //       wechat: 'code',
    //       tencent: 'code'
    //     }
    //     const type = codeMap[this.auth_type]
    //     const codeName = code[type]
    //     if (codeName) {
    //       this.$store.dispatch('LoginByThirdparty', codeName).then(() => {
    //         this.$router.push({ path: this.redirect || '/' })
    //       })
    //     } else {
    //       alert('第三方登录失败')
    //     }
    //   }
    // }
    }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg:#283443;
$light_gray:#fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
    .el-input {
        display: inline-block;
        height: 47px;
        width: 85%;

        input {
            background: transparent;
            border: 0px;
            -webkit-appearance: none;
            border-radius: 0px;
            padding: 12px 5px 12px 15px;
            color: $light_gray;
            height: 47px;
            caret-color: $cursor;

            &:-webkit-autofill {
                box-shadow: 0 0 0px 1000px $bg inset !important;
                -webkit-text-fill-color: $cursor !important;
            }
        }
    }

    .el-form-item {
        border: 1px solid rgba(255, 255, 255, 0.1);
        background: rgba(0, 0, 0, 0.1);
        border-radius: 5px;
        color: #454545;
    }
}
</style>

<style lang="scss" scoped>
$bg:#2d3a4b;
$dark_gray:#889aa4;
$light_gray:#eee;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;

  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }

    .set-language {
      color: #fff;
      position: absolute;
      top: 3px;
      font-size: 18px;
      right: 0px;
      cursor: pointer;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }

  .thirdparty-button {
    position: absolute;
    right: 0;
    bottom: 6px;
  }

  @media only screen and (max-width: 470px) {
    .thirdparty-button {
      display: none;
    }
  }
}
</style>
